NGINX
NGINX
Plugin: go.d.plugin Module: nginx
Overview
This collector monitors the activity and performance of NGINX servers, and collects metrics such as the number of connections, their status, and client requests.
It sends HTTP requests to the NGINX location stub-status, which is a built-in location that provides metrics about the NGINX server.
This collector is supported on all platforms.
This collector supports collecting metrics from multiple instances of this integration, including remote instances.
Default Behavior
Auto-Detection
By default, it detects NGINX instances running on localhost that are listening on port 80. On startup, it tries to collect metrics from:
- http://127.0.0.1/basic_status
- http://localhost/stub_status
- http://127.0.0.1/stub_status
- http://127.0.0.1/nginx_status
- http://127.0.0.1/status
Limits
The default configuration for this integration does not impose any limits on data collection.
Performance Impact
The default configuration for this integration is not expected to impose a significant performance impact on the system.
Setup
Prerequisites
Enable status support
Configure ngx_http_stub_status_module.
Configuration
File
The configuration file name for this integration is go.d/nginx.conf.
You can edit the configuration file using the edit-config script from the
Netdata config directory.
cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config go.d/nginx.conf
Options
The following options can be defined globally: update_every, autodetection_retry.
| Name | Description | Default | Required |
|---|---|---|---|
| update_every | Data collection frequency. | 1 | False |
| autodetection_retry | Recheck interval in seconds. Zero means no recheck will be scheduled. | 0 | False |
| url | Server URL. | http://127.0.0.1/stub_status | True |
| timeout | HTTP request timeout. | 1 | False |
| username | Username for basic HTTP authentication. | False | |
| password | Password for basic HTTP authentication. | False | |
| proxy_url | Proxy URL. | False | |
| proxy_username | Username for proxy basic HTTP authentication. | False | |
| proxy_password | Password for proxy basic HTTP authentication. | False | |
| method | HTTP request method. | GET | False |
| body | HTTP request body. | False | |
| headers | HTTP request headers. | False | |
| not_follow_redirects | Redirect handling policy. Controls whether the client follows redirects. | False | False |
| tls_skip_verify | Server certificate chain and hostname validation policy. Controls whether the client performs this check. | False | False |
| tls_ca | Certification authority that the client uses when verifying the server’s certificates. | False | |
| tls_cert | Client TLS certificate. | False | |
| tls_key | Client TLS key. | False |
Examples
Basic
A basic example configuration.
jobs:
- name: local
url: http://127.0.0.1/stub_status
HTTP authentication
Basic HTTP authentication.
jobs:
- name: local
url: http://127.0.0.1/stub_status
username: username
password: password
HTTPS with self-signed certificate
NGINX with enabled HTTPS and self-signed certificate.
jobs:
- name: local
url: http://127.0.0.1/stub_status
tls_skip_verify: yes
Multi-instance
Note: When you define multiple jobs, their names must be unique.
Collecting metrics from local and remote instances.
jobs:
- name: local
url: http://127.0.0.1/stub_status
- name: remote
url: http://192.0.2.1/stub_status
Metrics
Metrics grouped by scope.
The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.
Per NGINX instance
These metrics refer to the entire monitored application.
This scope has no labels.
Metrics:
| Metric | Dimensions | Unit |
|---|---|---|
| nginx.connections | active | connections |
| nginx.connections_status | reading, writing, idle | connections |
| nginx.connections_accepted_handled | accepted, handled | connections/s |
| nginx.requests | requests | requests/s |
Alerts
There are no alerts configured by default for this integration.
Troubleshooting
Debug Mode
To troubleshoot issues with the nginx collector, run the go.d.plugin with the debug option enabled. The output
should give you clues as to why the collector isn’t working.
-
Navigate to the
plugins.ddirectory, usually at/usr/libexec/netdata/plugins.d/. If that’s not the case on your system, opennetdata.confand look for thepluginssetting under[directories].cd /usr/libexec/netdata/plugins.d/ -
Switch to the
netdatauser.sudo -u netdata -s -
Run the
go.d.pluginto debug the collector:./go.d.plugin -d -m nginx